Attaching conveniently to any Nathan running belt sold separately, the Weather Resistant Phone Pocket allows you to bring your iPhone 4, iPhone 4S or other smartphone along on your next hike or run. Flip up access enables you to quickly put hands on the phone. The bounce free design keeps your phone from jiggling around. A headphone port even allows on the go connection to your phone.NOTE: The Nathan Weather Resistant Phone Pocket fits the iPhone 4 and the iPhone 4S. 6512NG